1 Samuel 22:13

And Saul said unto him, Why have ye conspired against me, thou and the son of Jesse, in that thou hast given him bread, and a sword, and hast enquired of God for him, that he should rise against me, to lie in wait, as at this day?

A Random Prayer...

Prayers and Passages of St. Alphonsus De Liguori

He who prays is certain to be saved; while he who prays not is certain to be damned. All the saints were saved, and came to be saints by praying; all the accursed souls in hell were lost through neglect of prayer; if they had prayed, it is certain that they would not have been lost. And this will be one of the greatest occasions of their anguish in hell, the thought that they might have saved themselves so easily; that they had only to beg God to help them, but that now the time is past when this could avail them (from The Necessity of Prayer).

more prayers...